Air conditioning device for work machine and work machine

Abstract

The application relates to the technical field of air conditioners, and discloses an air conditioner for a working machine and the working machine. The air conditioner for the working machine comprises an air conditioner main body, is suitable for being arranged below a seat in a cab, comprises a first chamber, a second chamber and a partition plate arranged between the first chamber and the second chamber, the partition plate is provided with a through hole for connecting the first chamber and the second chamber, a heat exchanger is arranged in the first chamber, an inner air inlet is arranged on the side wall of the first chamber, an outer air inlet is arranged on the side wall or the bottom wall of the second chamber and is connected with the outside, and an opening and closing mechanism has an opening state and a closing state; in the opening state, the first chamber and the second chamber are connected with the outside; and in the closing state, the outer air inlet is closed. The air conditioner main body is arranged below the seat, the space below the seat can be reasonably utilized, and the driver can have a spacious driving space.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to an air conditioning device for work machinery and the work machinery itself. Background Technology

[0002] To ensure that the cab remains cool and comfortable under various climatic conditions, air conditioning is usually installed in the cab of operating machinery to guarantee a good driving environment.

[0003] However, existing air conditioning structures are usually quite complex and require a large installation space. Therefore, installing the air conditioner in the driver's cabin may occupy the driver's necessary operating space, thus affecting the driver's normal driving. Summary of the Invention

[0004] In view of this, the present invention provides an air conditioning device for operating machinery and the operating machinery itself, so as to solve the problem that the existing air conditioning structure is relatively complex and requires a large installation space.

[0005] In a first aspect, the present invention provides an air conditioning device for work machinery, comprising:

[0006] An air conditioning unit is adapted to be installed under the seat in the driver's cab, including a first chamber, a second chamber, and a partition between the first chamber and the second chamber. The partition has a through hole connecting the first chamber and the second chamber. A heat exchanger is provided in the first chamber.

[0007] An internal air inlet is located on the side wall of the first chamber;

[0008] An external air inlet is located on the side wall or bottom wall of the second chamber and is connected to the outside.

[0009] The opening and closing mechanism has an open state and a closed state. In the open state, both the first chamber and the second chamber are connected to the outside. In the closed state, the external air inlet is closed.

[0010] Beneficial Effects: By placing the air conditioning unit under the seat in the driver's cab, this invention effectively utilizes the space beneath the seat, providing the driver with a comfortable and cool driving environment, as well as ample driving space. Furthermore, by providing an internal air inlet in the first chamber and an external air inlet in the second chamber, and connecting the first and second chambers through through holes in the partition, the air conditioning unit for the work machinery can simultaneously operate in both internal and external circulation modes. Moreover, by controlling the opening and closing of the external air inlet through an opening and closing mechanism, the structure of the air conditioning unit for the work machinery is simplified, manufacturing costs are reduced, and the driver can easily switch between the two operating modes.

[0011] In one optional embodiment, the opening and closing mechanism includes a transmission component, a rotating plate, and a rotating shaft disposed on the rotating plate. The transmission component drives the rotating shaft to rotate, thereby causing the rotating plate to rotate relative to the external air inlet, so as to open and close the external air inlet.

[0012] Beneficial effects: This invention drives the rotating shaft to rotate via a transmission component, causing the rotating plate to rotate relative to the external air inlet, thus enabling the external air circulation function of the air conditioning unit for the work machinery to be turned on or off. Furthermore, the design of the rotating plate and rotating shaft is simpler in structure than other forms of opening and closing mechanisms, and is also easier to operate and maintain.

[0013] In one optional embodiment, the rotating plate and the rotating shaft are disposed in the second cavity, one end of the rotating shaft extends out of the second cavity and is connected to the transmission member, and the other end of the rotating shaft is rotatably connected to the partition or the side wall of the second cavity.

[0014] Beneficial Effects: By arranging the rotating plate and rotating shaft within the second chamber, this invention better utilizes the space within the second chamber, reducing the space occupied by the air conditioning unit for the work machinery and improving its structural compactness. Furthermore, extending one end of the rotating shaft out of the second chamber facilitates connection between the rotating shaft and the transmission components, ensuring consistent movement between them. Moreover, rotatably connecting the other end of the rotating shaft to the partition or the side wall of the second chamber limits the shaft's movement and provides good support for the rotating plate, ensuring the stability of the rotating plate's movement and its seal against the external air inlet.

[0015] In one alternative embodiment, the connection between the rotating plate and the rotating shaft forms an arc-shaped groove that matches the shape of the rotating shaft.

[0016] Beneficial effects: This invention achieves a fixed connection between the rotating plate and the rotating shaft by setting an arc-shaped groove on the rotating plate that matches the shape of the rotating shaft, and by securing the rotating shaft within the arc-shaped groove. This not only ensures the consistency of movement between the rotating shaft and the rotating plate, but also facilitates future maintenance or replacement of the rotating plate and rotating shaft.

[0017] In one optional embodiment, the transmission component includes a first link, a second link, and a third link that are hinged sequentially, wherein one end of the first link is fixedly connected to the rotating shaft, the third link is hinged to the side wall of the second chamber, and the end of the third link away from the first link extends to form a gripping portion.

[0018] Beneficial effects: Compared with other transmission mechanisms, the transmission component in this invention has a relatively simple and stable structure, is easy to process, manufacture, and maintain, and reduces manufacturing and maintenance costs. Furthermore, a gripping part is formed by extending the third link away from the first link, which facilitates manual operation and improves the convenience and comfort of operation.

[0019] In one optional embodiment, the second chamber includes a bottom plate, a top plate, and a plurality of side plates, the plurality of side plates and the partition being arranged between the bottom plate and the top plate; the external air inlet is located on one of the side plates or the bottom plate.

[0020] Beneficial effects: This invention forms a relatively stable second chamber by surrounding the bottom and top plates with multiple side plates and partitions, thereby improving the safety of the second chamber in use. Furthermore, the position of the external air inlet in the second chamber can be adjusted according to specific usage scenarios and requirements, thus increasing structural flexibility.

[0021] In one optional embodiment, an installation channel suitable for the rotating plate to enter and exit is provided between adjacent side plates, and a sealing plate is provided on the installation channel, the sealing plate being detachably connected to the side plate.

[0022] Beneficial effects: This invention, by providing an installation channel between adjacent side plates suitable for the entry and exit of the rotating plate, allows the rotating plate to easily enter or leave the second chamber, facilitating installation or maintenance work by maintenance personnel. Furthermore, the detachable connection between the sealing plate and the side plates ensures the airtightness of the second chamber while facilitating the installation or maintenance of the rotating plate, thus improving structural flexibility and maintenance convenience.

[0023] In one optional embodiment, a filter device and an exhaust fan are sequentially arranged in the through hole along the direction from the second chamber to the first chamber.

[0024] Beneficial effects: This invention, by incorporating a filter device in the through-hole, can filter incoming air, reducing the probability of particulate matter or pollutants entering the driver's cabin and ensuring air quality inside the cabin. Furthermore, by installing an intake fan, a suitable amount of outside air can be drawn into the first chamber for heat exchange with the heat exchanger within the first chamber, such as for cooling or heating. The cooled or heated air is then discharged into the driver's cabin, ensuring fresh and comfortable air inside the cabin.

[0025] Secondly, the present invention also provides a working machine, comprising:

[0026] The driver's cab has an interior floor with a seat mounted on the floor.

[0027] The aforementioned air conditioning unit for work machinery is suitable for installation below the seat.

[0028] Beneficial effects: By placing the aforementioned air conditioning unit for the operating machinery under the seat, this invention effectively saves space within the cab, making the cab layout more flexible and improving space utilization efficiency. Furthermore, the air conditioning unit for the operating machinery has both internal and external circulation modes, allowing the driver to switch between them according to their needs.

[0029] In one alternative implementation, the external air inlet is connected to the side wall of the cab or to the floor.

[0030] Beneficial effects: This invention allows for the connection of the external air inlet to the outside through the side wall or floor of the cab, depending on the location of the external air inlet in the second chamber and specific requirements. The installation is relatively convenient. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of an air conditioning device for work machinery according to an embodiment of the present invention;

[0033] Figure 2 for Figure 1 The exploded view of the second chamber is shown below;

[0034] Figure 3This is a schematic diagram showing the connection between the rotating plate and the rotating shaft in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of an air conditioning device for work machinery according to an embodiment of the present invention, with the second chamber removed.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Air conditioner main body; 101. First chamber; 1011. Partition; 1012. Through hole; 1013. Heat exchanger; 102. Second chamber; 1021. Bottom plate; 1022. Top plate; 1023. Side plate; 10231. Sealing plate; 3. Outside air inlet; 4. Opening and closing mechanism; 401. Transmission component; 4011. First connecting rod; 4012. Second connecting rod; 4013. Third connecting rod; 402. Rotating plate; 4021. Arc-shaped groove; 403. Rotating shaft; 5. Filter device; 6. Suction fan; 7. Floor. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] To address the problem that existing air conditioning systems are complex in structure and require a large installation space, this invention provides an air conditioning device for work machinery and the work machinery itself.

[0040] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0041] According to an embodiment of the present invention, in one aspect, such as Figure 1 , Figure 2 as well as Figure 4 As shown, an air conditioning device for working machinery is provided, including: an air conditioning body 1, an internal air inlet (not shown in the figure), an external air inlet 3, and an opening and closing mechanism 4.

[0042] Specifically, the air conditioning unit 1 is adapted to be installed under the seat in the driver's cab, including a first chamber 101, a second chamber 102, and a partition 1011 disposed between the first chamber 101 and the second chamber 102. The partition 1011 is provided with a through hole 1012 connecting the first chamber 101 and the second chamber 102. A heat exchanger 1013 is provided in the first chamber 101. An internal air inlet is disposed on the side wall of the first chamber 101. An external air inlet 3 is disposed on the side wall or bottom wall of the second chamber 102 and is connected to the outside. The opening and closing mechanism 4 has an open state and a closed state. In the open state, both the first chamber 101 and the second chamber 102 are connected to the outside. In the closed state, the external air inlet 3 is closed.

[0043] The embodiments of the present invention, by placing the air conditioning unit 1 under the seat in the driver's cab, can effectively utilize the space under the seat, so that the driver can not only have a comfortable and refreshing driving environment, but also have a spacious driving space.

[0044] It should be noted that in this embodiment, the internal air inlet refers to the air intake of the air conditioning unit for the work machinery in internal circulation mode, and the internal air inlet needs to be connected to the air inside the cab. In this embodiment, the external air inlet 3 refers to the air intake of the air conditioning unit for the work machinery in external circulation mode, and the external air inlet 3 usually needs to be connected to the outside air. Therefore, this embodiment provides an internal air inlet on the first chamber 101 and an external air inlet 3 on the second chamber 102, and connects the first chamber 101 and the second chamber 102 through the through hole 1012 on the partition 1011, so that the air conditioning unit for the work machinery can have both internal and external circulation operating modes simultaneously. Compared with existing air conditioning units that only have internal circulation, the air conditioning unit for the work machinery in this embodiment can continuously introduce fresh outside air into the cab through the external air inlet 3, thereby maintaining the freshness of the air inside the cab.

[0045] For ease of explanation, Figure 1 The orientation shown describes the relative positional relationship between the first chamber 101 and the second chamber 102, wherein... Figure 1 The X direction shown indicates the lateral direction of the air conditioning unit for the work machinery. Figure 1 The Y-direction shown represents the longitudinal direction of the air conditioning unit for the work machinery. It should be noted that the lateral and longitudinal directions of the seat are consistent with the lateral and longitudinal directions of the air conditioning unit for the work machinery.

[0046] In this embodiment, the internal air inlet of the first chamber 101 is located on the side wall of the air conditioning unit for the work machinery, which extends laterally. It is understood that the number of internal air inlets on this side wall can be one, two, or four, and the shape of the internal air inlets can be, but is not limited to, square, circular, or polygonal, as long as it ensures that air from the cab can smoothly enter the first chamber 101. This invention does not impose specific limitations on this. Furthermore, to ensure the quality of the air delivered by the air conditioning unit for the work machinery in internal circulation mode, a filter element can be installed at the internal air inlet to filter and absorb foreign matter, particulate matter, or pollutants in the air.

[0047] In this embodiment, the second chamber 102 can be arranged longitudinally or laterally along the air conditioning unit of the working machinery. Preferably, the second chamber 102 is arranged laterally along the air conditioning unit of the working machinery. This makes full use of the lateral space of the cab (or seat) and avoids the air conditioning unit of the working machinery occupying too much space longitudinally, thereby extending out of the bottom of the seat and interfering with the driver, thus reducing the driver's driving experience.

[0048] It is understood that the location of the external air inlet 3 on the second chamber 102 can be determined according to specific circumstances. This not only ensures the normal operation of the external circulation function of the air conditioning unit for the work machinery, but also reduces the number of connecting parts between the air conditioning unit and the cab, thus lowering structural complexity and production costs. Preferably, the external air inlet 3 is located on the bottom wall of the second chamber 102. This not only reduces the number of connecting parts between the air conditioning unit and the cab, but also further optimizes the size of the air conditioning unit. Furthermore, the number of external air inlets 3 on the second chamber 102 can be one, two, or four, and the shape of the external air inlets 3 can be, but is not limited to, square, circular, or polygonal, as long as it ensures that outside air can smoothly enter the second chamber 102. The present invention does not impose specific limitations on this.

[0049] Furthermore, in this embodiment, the opening or closing of the external air inlet 3 is controlled by the opening and closing mechanism 4, which not only simplifies the structure of the air conditioning unit for the operating machinery and reduces manufacturing costs, but also allows the driver to easily switch between the two working modes of the air conditioning unit for the operating machinery.

[0050] According to one embodiment of the present invention, the opening and closing mechanism 4 includes a transmission member 401, a rotating plate 402 and a rotating shaft 403 disposed on the rotating plate 402. The transmission member 401 drives the rotating shaft 403 to rotate, thereby causing the rotating plate 402 to rotate relative to the external air inlet 3, so as to open and close the external air inlet 3.

[0051] In embodiments of the present invention, the rotating shaft 403 is driven to rotate by the transmission component 401, causing the rotating plate 402 to rotate relative to the external air inlet 3, thereby enabling the external circulation function of the air conditioning unit for the work machinery to be turned on or off. Furthermore, the design of the rotating plate 402 and the rotating shaft 403 is simpler in structure than other forms of opening and closing structures, and is also easier to operate and maintain.

[0052] It should be noted that in this embodiment, the rotating shaft 403 can be located near the middle position of the rotating plate 402. In this case, the transmission component 401 can drive the rotating plate 402 to rotate continuously at the external air inlet 3, thereby opening or closing the external air inlet 3. Alternatively, in this embodiment, the rotating shaft 403 can also be located at one end of the rotating plate 402. In this case, the transmission component 401 can drive the rotating plate 402 to reciprocate at the external air inlet 3, thereby opening or closing the external air inlet 3. For example, when the transmission component 401 drives the rotating plate 402 to rotate clockwise, the external air inlet 3 gradually closes; when the transmission component 401 drives the rotating plate 402 to rotate counterclockwise, the external air inlet 3 gradually opens. It is understood that in both of the above solutions, the airflow into the external air inlet 3 can be adjusted by changing the relative position of the rotating plate 402 and the external air inlet 3.

[0053] It should be further noted that the shape of the rotating plate 402 can be adjusted according to the shape of the external air inlet 3 to ensure that the rotating plate 402 can effectively seal the external air inlet 3 when the opening and closing mechanism 4 is in the closed state, thereby isolating the second chamber 102 from the outside air. Preferably, the size of the rotating plate 402 is slightly larger than the size of the external air inlet 3 to ensure the sealing performance of the rotating plate 402 for the external air inlet 3.

[0054] According to one embodiment of the present invention, a rotating plate 402 and a rotating shaft 403 are disposed within a second chamber 102. One end of the rotating shaft 403 extends out of the second chamber 102 and is connected to a transmission member 401, while the other end of the rotating shaft 403 is rotatably connected to a partition plate 1011 or the side wall of the second chamber 102. By arranging the rotating plate 402 and the rotating shaft 403 within the second chamber 102, this embodiment of the present invention can better utilize the space within the second chamber 102, reduce the space occupied by the air conditioning unit for the work machinery, and improve the structural compactness of the air conditioning unit. Furthermore, extending one end of the rotating shaft 403 out of the second chamber 102 facilitates the connection between the rotating shaft 403 and the transmission member 401, thereby ensuring the consistency of movement between the rotating shaft 403 and the transmission member 401. Furthermore, by rotatably connecting the other end of the rotating shaft 403 to the partition plate 1011 or the side wall of the second chamber 102, the movement position of the rotating shaft 403 can be limited, and the rotating shaft 403 can provide good support for the rotating plate 402, thereby ensuring the stability of the movement of the rotating plate 402 and the sealing of the rotating plate 402 to the external air inlet 3.

[0055] According to one embodiment of the present invention, such as Figure 3 As shown, an arc-shaped groove 4021, adapted to the shape of the rotating shaft 403, is formed at the connection between the rotating plate 402 and the rotating shaft 403. In this embodiment of the invention, by providing an arc-shaped groove 4021 adapted to the shape of the rotating shaft 403 on the rotating plate 402 and securing the rotating shaft 403 within the arc-shaped groove 4021, a fixed connection between the rotating plate 402 and the rotating shaft 403 is achieved. This not only ensures the consistency of movement between the rotating shaft 403 and the rotating plate 402 but also facilitates subsequent maintenance or replacement of the rotating plate 402 and the rotating shaft 403.

[0056] It should be noted that the material of the arc-shaped groove 4021 can be made of an elastic material, and the size of the arc-shaped groove 4021 can be slightly smaller than the size of the rotating shaft 403, thereby achieving an interference fit between the rotating shaft 403 and the arc-shaped groove 4021, ensuring the stability of the connection between the rotating shaft 403 and the arc-shaped groove 4021, as well as the consistency of the movement between the rotating shaft 403 and the arc-shaped groove 4021.

[0057] According to one embodiment of the present invention, the transmission member 401 includes a first link 4011, a second link 4012, and a third link 4013 hinged sequentially. One end of the first link 4011 is fixedly connected to the rotating shaft 403, and the third link 4013 is hinged to the side wall of the second chamber 102. The end of the third link 4013 away from the first link 4011 extends to form a gripping portion. It is understood that in this embodiment, the first link 4011, the second link 4012, and the third link 4013 cooperate to form a four-bar linkage, and the gripping portion extends from the end of the third link 4013 away from the first link 4011, thus facilitating manual operation and improving the convenience and comfort of operation.

[0058] It should be noted that the transmission component 401 in this embodiment can also be a drive motor, wherein the drive shaft of the drive motor is connected to the rotating shaft 403. However, compared with the four-bar linkage, the structure of the drive motor and the transmission shaft is relatively complex, and the manufacturing and maintenance costs are relatively high. In addition, it will occupy a large amount of cab space, which is not conducive to the miniaturization of air conditioning devices for operating machinery.

[0059] According to one embodiment of the present invention, the second chamber 102 includes a bottom plate 1021, a top plate 1022 and a plurality of side plates 1023, the plurality of side plates 1023 and the partition plate 1011 surrounding the bottom plate 1021 and the top plate 1022; the external air inlet 3 is provided on one of the side plates 1023 or on the bottom plate 1021.

[0060] In embodiments of the present invention, a relatively stable second chamber 102 is formed by surrounding a bottom plate 1021 and a top plate 1022 with multiple side plates 1023 and partition plates 1011, thereby improving the safety of the second chamber 102 in use. Furthermore, embodiments of the present invention allow for adjustment of the position of the external air inlet 3 on the second chamber 102 according to specific usage scenarios and requirements, thus increasing structural flexibility.

[0061] It should be noted that in this embodiment, one or more side plates 1023 are installed using a detachable connection method, such as screw connection. This facilitates subsequent maintenance or replacement of the structure inside the second chamber 102. Similarly, the installation of the bottom plate 1021 of the second chamber 102 and the floor 7 of the driver's cab can also be done using a detachable connection method, such as screw connection. This arrangement facilitates subsequent maintenance or replacement of the second chamber 102 and also facilitates adjustment of the position of the second chamber 102.

[0062] It should be noted that since the second chamber 102 is installed under the seat, and armrest boxes are usually provided on both sides of the seat, the bottom wall of the armrest box can be used as the top plate 1022 of the second chamber 102 to reduce manufacturing costs and space occupation.

[0063] According to one embodiment of the present invention, an installation channel suitable for the entry and exit of the rotating plate 402 is provided between adjacent side plates 1023. A sealing plate 10231 is provided on the top cover of the installation channel, and the sealing plate 10231 is detachably connected to the side plate 1023. By providing an installation channel suitable for the entry and exit of the rotating plate 402 between adjacent side plates 1023, this embodiment of the present invention allows the rotating plate 402 to easily enter or leave the second chamber 102, which is beneficial for maintenance personnel to install or maintain the rotating plate 402. Furthermore, the detachable connection between the sealing plate 10231 and the side plate 1023 ensures the sealing of the second chamber 102 while facilitating the installation or maintenance of the rotating plate 402, thus improving the flexibility of the structure and the convenience of maintenance.

[0064] According to one embodiment of the present invention, a filter device 5 and a suction fan 6 are sequentially arranged in the through hole 1012 along the direction from the second chamber 102 to the first chamber 101. By providing the filter device 5 in the through hole 1012, the present invention can filter outside air, reducing the probability of particulate matter or pollutants entering the driver's cabin and ensuring air quality inside the driver's cabin. Furthermore, by providing the suction fan 6, a suitable amount of outside air can be drawn into the first chamber 101 for heat exchange with the heat exchanger 1013 inside the first chamber 101, for example, for cooling or heating, thereby exhausting the cooled or heated air into the driver's cabin, ensuring fresh and comfortable air inside the driver's cabin.

[0065] It should be noted that in this embodiment, the number of through holes 1012 can be one or more, and the shape of the through holes 1012 can be, but is not limited to, square, circular or polygonal, as long as the first chamber 101 and the second chamber 102 can be connected to each other. No specific limitation is made here.

[0066] It should be noted that, to facilitate subsequent replacement or maintenance of the filter device 5 and the suction fan 6, both the filter device 5 and the suction fan 6 can be detachably connected to the through hole 1012. For example, a mounting groove can be provided on the side of the through hole 1012 located in the second chamber 102, and the filter device 5 can be snapped into the mounting groove; the suction fan 6 can be placed on the side of the through hole 1012 located in the first chamber 101, and connected and fixed to the through hole 1012 by screws.

[0067] According to an embodiment of the present invention, another aspect provides a working machine, including: a cab (not shown) and the above-described air conditioning unit for the working machine.

[0068] Specifically, the cab is provided with a floor 7, and a seat is provided on the floor 7; the aforementioned air conditioning unit for the work machinery is suitable for installation under the seat.

[0069] In embodiments of the present invention, the air conditioning unit for the operating machinery is positioned below the seat, effectively saving space within the cab and making the cab layout more flexible, thus improving space utilization efficiency. Furthermore, the air conditioning unit for the operating machinery has both internal and external circulation modes, allowing the driver to switch between them according to their needs. In internal circulation mode, the air conditioning unit is more effective at regulating the temperature (heating or cooling) inside the cab than in external circulation mode. Additionally, when the air quality outside the cab is poor (e.g., high dust levels), activating internal circulation mode prevents outside air from entering the cab, thus maintaining fresh air inside. In external circulation mode, fresh outside air is promptly replenished to the cab, keeping the air inside fresh and preventing the air from becoming stale or developing excessive odors due to prolonged use of internal circulation mode.

[0070] It should be noted that the operating machinery in the embodiments of the present invention may be, but is not limited to, excavators, cranes, or bulldozers.

[0071] According to one embodiment of the present invention, the external air inlet 3 is connected to the side wall of the cab or to the floor 7.

[0072] It can be understood that, according to the location of the external air inlet 3 on the second chamber 102 and specific needs, the embodiment of the present invention can choose to open the opening on the side panel 1023 of the cab or the floor 7 of the cab, so as to connect the external air inlet 3 to the outside through the side wall or floor 7 of the cab, which is relatively convenient to set up.

[0073] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air conditioning device for operating machinery, characterized in that, include: An air conditioning unit (1) is adapted to be installed under the seat in the driver's cab, including a first chamber (101), a second chamber (102) and a partition (1011) disposed between the first chamber (101) and the second chamber (102). The partition (1011) is provided with a through hole (1012) connecting the first chamber (101) and the second chamber (102). A heat exchanger (1013) is provided in the first chamber (101). An internal air inlet is located on the side wall of the first chamber (101); An external air inlet (3) is provided on the side wall or bottom wall of the second chamber (102) and is connected to the outside. The opening and closing mechanism (4) has an open state and a closed state. In the open state, the first chamber (101) and the second chamber (102) are connected to the outside. In the closed state, the external air inlet (3) is closed. The opening and closing mechanism (4) includes a transmission component (401), a rotating plate (402), and a rotating shaft (403) disposed on the rotating plate (402). The transmission component (401) drives the rotating shaft (403) to rotate, thereby causing the rotating plate (402) to rotate relative to the external air inlet (3) to open and close the external air inlet (3). The rotating plate (402) and the rotating shaft (403) are disposed in the second chamber (102). One end of the rotating shaft (403) extends out of the second chamber (102) and is connected to the transmission member (401). The other end of the rotating shaft (403) is rotatably connected to the partition plate (1011) or the side wall of the second chamber (102). The transmission component (401) includes a first link (4011), a second link (4012), and a third link (4013) that are hinged in sequence. One end of the first link (4011) is fixedly connected to the rotating shaft (403), and the third link (4013) is hinged to the side wall of the second chamber (102). The end of the third link (4013) away from the first link (4011) extends to form a gripping part.

2. The air conditioning device for operating machinery according to claim 1, characterized in that, The connection between the rotating plate (402) and the rotating shaft (403) forms an arc-shaped groove (4021) that is adapted to the shape of the rotating shaft (403).

3. The air conditioning device for operating machinery according to claim 1, characterized in that, The second chamber (102) includes a bottom plate (1021), a top plate (1022) and a plurality of side plates (1023), the plurality of side plates (1023) and the partition (1011) being arranged between the bottom plate (1021) and the top plate (1022); the external air inlet (3) is located on one of the side plates (1023) or on the bottom plate (1021).

4. The air conditioning device for operating machinery according to claim 3, characterized in that, An installation channel suitable for the rotating plate (402) to enter and exit is provided between adjacent side plates (1023). A sealing plate (10231) is provided on the top cover of the installation channel. The sealing plate (10231) is detachably connected to the side plate (1023).

5. The air conditioning unit for operating machinery according to any one of claims 1 to 4, characterized in that, Along the direction from the second chamber (102) to the first chamber (101), a filter device (5) and a suction fan (6) are sequentially provided in the through hole (1012).

6. A type of operating machinery, characterized in that, include: The driver's cab has an interior floor (7) on which a seat is provided; The air conditioning unit for work machinery according to any one of claims 1 to 5 is adapted to be installed below the seat.

7. The operating machinery according to claim 6, characterized in that, The external air inlet (3) is connected to the side wall of the cab or to the floor (7).

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